Oh my good lord these are beautiful. I can't stop staring. Wouldn't this be the perfect way to capture your wedding blooms to remember them long after they've wilted? But you'd have to have a sketch done of your dress before the big day. Hm. Or wait (yes, I'm just thinking out loud now), perhaps a little photoshop magic to blend a wedding day photograph with a later sketch?! OK I'll figure that out later.
I chased the source of these gorgeous images through tumblr without much luck. The best I could come up with was this Chinese website on the watermark. If anyone sees this and happens to have better information on who created these, shoot me an email!